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Neuquensaurus was a long-necked plant-eating dinosaur from the Late Cretaceous of South America. It belonged to the titanosaurs, a major sauropod group that became especially successful during the later part of dinosaur history. Unlike the giant record-holding sauropods, Neuquensaurus was more moder
Cathartesaurus was a long-necked plant-eating sauropod from the Cretaceous of South America. It was not one of the most massive sauropods ever discovered, but it is important because it belonged to the rebbachisaurids, a group of more lightly built diplodocoid sauropods that survived later than many
Dinosaurs were not “cruel” in the human sense. They hunted, fought, scavenged, defended territory, and competed for mates because those behaviors helped them survive. Still, some dinosaurs looked terrifying for good reason: crushing jaws, blade-like teeth, strange skull weapons, powerful claws, or
Maiasaura was a large duck-billed dinosaur from the Late Cretaceous of North America. It is best known for the remarkable fossil evidence connected with nests, eggs, hatchlings, and growing juveniles. Because of these discoveries, Maiasaura became one of the most famous dinosaurs in discussions abou
Olorotitan was a large duck-billed dinosaur from the Late Cretaceous of Asia. It is best known for the tall, elegant crest on top of its head, which gave it a very distinctive profile compared with other hadrosaurs. As a lambeosaurine, it belonged to the group of crested duck-billed dinosaurs that l
Oviraptor was a small, lightly built theropod dinosaur from the Late Cretaceous of Asia. It is one of the most famous feathered dinosaurs and is especially well known for the misunderstanding behind its name. Early researchers thought it had been caught stealing eggs, which led to the name “egg thi
Pentaceratops was a large horned dinosaur from the Late Cretaceous of what is now the southwestern United States. It is best known for its enormous skull, deep frill, strong beak, and long facial horns. Among ceratopsians, Pentaceratops stands out as one of the most impressive skull-bearing animals
Sauroposeidon was a giant long-necked plant-eating dinosaur from the Early Cretaceous of North America. It is famous for its extraordinary neck vertebrae, which suggest that it was one of the tallest dinosaurs ever discovered. Although it is sometimes mentioned alongside the biggest sauropods of all
Yangchuanosaurus was a large meat-eating theropod dinosaur from Jurassic China. It is one of the best-known predatory dinosaurs from Asia and is especially famous for its powerful skull, sharp teeth, and strong hunting build. Although it is sometimes described as an Asian equivalent of Allosaurus be
Was Styracosaurus a dinosaur?Yes. Styracosaurus was a true dinosaur, specifically a horned ceratopsian from the Late Cretaceous of North America.How big was Styracosaurus?Styracosaurus was about 5.5 to 5.8 meters long and likely weighed around 2.5 to 3 tonnes, although these figures are still estima
Pteranodon and pterodactyl are often confused, but they are not the same animal. Pteranodon was a large, toothless pterosaur from Late Cretaceous North America with a long skull crest and huge wings. “Pterodactyl” is a casual word often used for many pterosaurs, but the real genus Pterodactylus wa
Giganotosaurus and T. rex were both giant meat-eating dinosaurs, but they never met. Giganotosaurus lived about 99–95 million years ago in South America, while T. rex lived about 68–66 million years ago in North America. Giganotosaurus was likely longer and lighter-built; T. rex was heavier-skulle
Aquatic reptiles are reptiles that spend much or most of their lives in water, including sea turtles, sea snakes, marine iguanas, crocodilians, and many freshwater turtles. Unlike fish, aquatic reptiles breathe air with lungs, but they can stay underwater for long periods by slowing their metabolism
Megalosaurus was a large meat-eating theropod dinosaur from Jurassic England. Today it is known as one of the earliest named dinosaurs and one of the most important animals in the history of dinosaur science. Although it is not as famous in popular culture as Tyrannosaurus or Velociraptor, Megalosau
Pachycephalosaurus was one of the most unusual plant-eating dinosaurs of the Late Cretaceous. It is famous for its thick, rounded skull dome, which made it look very different from horned dinosaurs, duck-billed dinosaurs, or armored dinosaurs living at the same time. Although it is often shown charg
Argentinosaurus was a gigantic long-necked plant-eating dinosaur from the Late Cretaceous of South America. It is usually classified as a titanosaur, a group of sauropods that included some of the largest land animals ever to live. Although its fossil remains are incomplete, Argentinosaurus has beco
Achelousaurus was a medium-sized horned dinosaur that lived in what is now Montana during the Late Cretaceous. It belonged to the centrosaurine branch of ceratopsians, a group known for deep skull frills, facial ornamentation, and beaked mouths adapted for plant-eating. Unlike some of its more famou
Titanosaurus is a famous name linked to the giant long-necked dinosaurs known as titanosaurs. In strict scientific usage, Titanosaurus refers to a historical dinosaur genus described from India in the Cretaceous. However, because the original fossils were fragmentary, many researchers consider Titan